#173779#173779

#173779 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.5% C 0.119 H 262.5°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#173779
RGB	rgb(23, 55, 121)
HSL	hsl(220, 68%, 28%)
HSV	hsv(220, 81%, 47%)
CMYK	cmyk(81%, 54.5%, 0%, 52.5%)
CIE-LAB	lab(24.62, 14.35, -41.02)
CIE-LCH	lch(24.62, 43.45, 289.28°)
OKLab	oklab(35.51% -0.0155 -0.1182)
OKLCH	oklch(35.51% 0.119 262.5)
XYZ	xyz(5.1695, 4.2944, 18.6419)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173779 #795917

analogous

#176879 #173779 #281779

triadic

#173779 #791737 #377917

tetradic

#173779 #791768 #795917 #177928

square

#173779 #791768 #795917 #177928

split-complementary

#173779 #792817 #687917

monochromatic

#050C1A #0D2046 #173779 #214EAC #3268D8

Accessibility & contrast

On white

11.30

#173779 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173779 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173779

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173779	#FFFFFF	#000000	##FFFFFF
##173779	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#083F7B

Deuteranopia (green-blind)

#003678

Tritanopia (blue-blind)

#004752

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173779;
/* rgb */ color: rgb(23, 55, 121);
/* oklch */ color: oklch(35.5% 0.119 262.5);

Tailwind

colors: {
  custom: {
    50: '#656da0',
    500: '#173779',
    950: '#000000',
  },
}

SCSS

$custom: #173779;
$custom-light: #656da0;
$custom-dark: #000000;

JSON

{
  "hex": "#173779",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 121
  },
  "hsl": {
    "h": 220.408,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35514,
    "c": 0.11917,
    "h": 262.5
  },
  "luminance": 0.04295
}

Semantic roles & 50–950 ramp

primary

#173779

secondary

#AE893E

accent

#B23DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070F

muted

#7A7A7E

Preview Lab

Preview with #173779

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →